The most suitable for summer is naturally watermelon, which is the most perfect chilled.
Watermelon will taste sweeter when chilled, which is related to the composition and structure of fructose in watermelon, in the process of low temperature, the furan-type fructose of watermelon will change to pyrano-fructose, and the latter is 3 times sweeter than the former.
Nearly 40 degrees Celsius hot weather, blowing the air conditioner to watch the video, holding the cold ice watermelon, a whole beautiful time, the mobile phone swiped -
The editor who watched it in the comment area trembled, and then looked at the watermelon that was about to bottom out, can I still save it?
Bold watermelon, every summer is so gracious to you, dare to stab me in the back! So here comes the question -
Watermelon is really inedible when you put it in the refrigerator for two days?
I'm sorry to tell you that you can't!
Good things, everyone loves them, and the sweet, cool and heat-relieving watermelon is not only what you like, but also pathogenic bacteria.
Now think back, have you ever vomited and diarrhea after eating iced watermelon? In fact, it is some pathogenic bacteria that are playing tricks.
Watermelon is good, germs are bad!
Which pathogens are so bad? Mainly some cold-tolerant, psychrophilic bacteria, they can grow and reproduce at 4 °C.
These "killers" are not afraid of the cold
Many people are accustomed to putting uneaten food in the refrigerator, which is not a safe, or even a greenhouse for some pathogenic bacteria.
Common pathogenic bacteria in refrigerators
| The name of the bacteria | Incubation period | illustrate | Risk factor |
| colibacillus | 3-4 days | Cold-resistant fungus | ⭐⭐⭐ |
| salmonella | 0.5-3 days | Cold-resistant fungus | ⭐⭐⭐⭐⭐ |
| Shigella | 1-3 days | Cold-resistant fungus | ⭐⭐⭐⭐ |
| Yersinia spp | 3-7 days | Psychrophiles | ⭐⭐⭐⭐⭐ |
| Listeria monocytogenes | 3-70 days | Psychrophiles | ⭐⭐⭐⭐⭐ |
What are the consequences of eating these bacteria?
1. Escherichia coli
Escherichia coli can coexist with the human body when the human body functions normally, and it is a proper "good citizen", but once it is "blackened", it can cause a series of local tissue and organ infections such as gastrointestinal tract infection or urinary tract.
2. Salmonella
It is mainly found in milk, meat and eggs, and can still survive for 3~4 months in the low temperature environment of the refrigerator. The most common symptoms after eating are gastroenteritis, such as vomiting, diarrhea, abdominal pain, the common incubation period is 12~36 hours, the course of the disease is generally 2~3 days, severe cases can cause dehydration, shock, and some patients can develop sepsis.
3. Listeria monocytogenes
Listeria monocytogenes is a representative of "cold-tolerant bacteria", and it has a nickname called "killer in the refrigerator". Mainly in meat and meat products, milk and dairy products, aquatic products, etc., the general population usually eats food contaminated with Listeria 3-70 days (generally 21 days) after diarrhea, nausea, vomiting, fever, headache, muscle pain and other symptoms, later can cause sepsis, meningitis, sometimes cause endocarditis, if not treated in time, patients often die within 72 hours, the case fatality rate is as high as 30%-35%.
People with immunodeficiency, pregnant women, infants, the elderly, and cancer patients are the most likely to be incompromised, and the symptoms after infection are also severe. After pregnant women are infected, Listeria monocytogenes can be transmitted to the fetus through the placenta, which may lead to miscarriage, stillbirth, preterm birth, neonatal sepsis and purulent meningitis, and the mortality rate of neonatal infection is as high as 30%-70%.
4. Yersinia spp
If food and drinking water are contaminated with Yersinia bacteria, people may experience symptoms such as fever, abdominal pain, diarrhea, vomiting, and even enterocolitis after consumption.
5. Shigella
Shigella infection can cause intestinal infections such as diarrhea, abdominal pain, and fever, and in severe cases, bacillary dysentery.
How to "eat melons" correctly
Let's pick out the words together, watermelon can't be eaten in the refrigerator for "two days", and it can still be eaten if it is left for a while! What a wit~
Precautions when eating chilled watermelon:
● When buying watermelon, buy whole melon or freshly cut watermelon, don't buy cut and left for a long time.
● Before and after cutting melons, wash your hands carefully with soap and water; Before cutting the melon, carefully wash the skin of the melon with water to ensure that the watermelon is not polluted when it is cut; When cutting melons, use special and clean melon cutting knives and cutting boards.
● Uncut watermelon does not need to be refrigerated, it can generally be stored for about 7-10 days, and the cut watermelon must be put in the refrigerator within 2 hours; Watermelon that has been left at room temperature for more than 2 hours is not recommended to continue to eat, and it is best to discard it in time.
● Cut the uneaten watermelon, wrap it in clean plastic wrap and put it in the refrigerator as soon as possible (it is recommended to store it in the refrigerator below 5 degrees), and the refrigeration time should not exceed 12 hours.
● When eating again, it is recommended to cut off the flesh of one centimeter on the surface of the watermelon.